<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>主页</title>
    <style>
        .center-text{
            text-align:center;
        }
    </style>
</head>
<body>
    <div class = "center-text">
                 主页
    </div>
<form action="/body/tologin/">
    <button type="submit">
        <h>退出登录</h>
    </button>
</form>

</body>
</html>